The Grammy winner, 31, and Brandon Blackstock, 36, tied the knot Sunday in Tennessee, the singer shared on Twitter.

"I'm officially Mrs. Blackstock :) We got married yesterday at Blackberry Farms in TN, the most beautiful place ever!" she tweeted this afternoon, alongside a wedding photo of Blackstock kissing the bride wearing a white, lace gown.

Clarkson followed up the news by sharing another wedding photo of her and her new husband in the countryside.

Clarkson told ABC earlier in the month that she planned to do something small with just the couple and Blackstock's two children. After getting off tour a few weeks ago, the "Because of You" singer was waiting until the four of them were together, so they could all be there for the small ceremony.

"We are going home tonight right after this concert," she said. "Brandon shares custody with his kids, so we are just waiting till we get them back and then we'll take them and go."

Clarkson and her husband had originally planned a big October wedding, with Kelly even posting beautiful engagement pictures on Twitter.

But the couple announced that something smaller was better suited for them, so they decided to elope.

Everyone, even Clarkson's mother Jeanne Ann, was supportive as long as the newlyweds were happy.

"I thought my mother was going to be [disappointed] because I'm her baby," Clarkson said of not having a grand wedding. "I thought that was going to be weird but she totally got it. She actually responded, 'I'm just happy I don't have to buy a dress!'"

She added, "We are a very low-key kind of family. She was just so happy it's not a big ordeal."

Clarkson and Blackstock began dating in early 2012; the couple getting engaged in December.

The "Stronger" singer said she loves being a stepmom to her beau's two children and that she's even ready to expand the family very soon with a baby of her own.

"Like soon! Brandon, he's a great dad and we wanted to make sure it's cool with [his kids], but they are really pumped about it," she said. "We actually probably want two more and he's got two, so four total. [The oldest] will be in her teens, so that's kind of like a live-in baby sitter!"